Month: November 2022

Areephong, Jetsuda published the artcileThree-state photochromic switching in a silyl bridged diarylethene dimer, COA of Formula: C15H14Cl2S2, the publication is Organic & Biomolecular Chemistry (2007), 5(8), 1170-1174, database is CAplus and MEDLINE.

The synthesis and photochem. characterization of bicomponent mol. switches based on covalently tethered dithienylethene photochromes is described. Both photochromic units undergo complete switching between the fully cyclized and fully non-cyclized states despite a significant level of electronic communication between the individual units and their proximity.

Organic & Biomolecular Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, COA of Formula: C15H14Cl2S2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Davies, Nicholas G. M. published the artcileTargeting conserved water molecules: Design of 4-aryl-5-cyanopyrrolo[2,3-d]pyrimidine Hsp90 inhibitors using fragment-based screening and structure-based optimization, Safety of 4-Chloro-2-methylphenylboronic acid, the publication is Bioorganic & Medicinal Chemistry (2012), 20(22), 6770-6789, database is CAplus and MEDLINE.

Inhibitors of the Hsp90 mol. chaperone are showing promise as anti-cancer agents. Here the authors describe a series of 4-aryl-5-cyanopyrrolo[2,3-d]pyrimidine ATP competitive Hsp90 inhibitors that were identified following structure-driven optimization of purine hits revealed by NMR based screening of a proprietary fragment library. Ligand-Hsp90 x-ray structures combined with mol. modeling led to the rational displacement of a conserved water mol. leading to enhanced affinity for Hsp90 as measured by fluorescence polarization, isothermal titration calorimetry and surface plasmon resonance assays. This displacement was achieved with a nitrile group, presenting an example of efficient gain in binding affinity with minimal increase in mol. weight Some compounds in this chem. series inhibit the proliferation of human cancer cell lines in vitro and cause depletion of oncogenic Hsp90 client proteins and concomitant elevation of the co-chaperone Hsp70. In addition, one compound was demonstrated to be orally bioavailable in the mouse. This work demonstrates the power of structure-based design for the rapid evolution of potent Hsp90 inhibitors and the importance of considering conserved water mols. in drug design.

Bioorganic & Medicinal Chemistry published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C7H8BClO2, Safety of 4-Chloro-2-methylphenylboronic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Prabhu, Vilas A. published the artcileSynthesis and structure-activity relationships of selected tricyclic oxime O-ethers as potential anticholinergic agents, Recommanded Product: 2-Chloro-N,N-dimethylpropan-1-amine hydrochloride, the publication is Journal of Pharmaceutical Sciences (1981), 70(5), 558-62, database is CAplus and MEDLINE.

The thioxanthone oximes I [R = CH₂CH₂NMe₂, 1-methyl-4-piperidinyl, (CH₂)₃NMe₂, CH₂CHMeNMe₂, CHMeCH₂NMe₂], prepared by alkylation of thioxanthone oxime with the appropriate aminoalkyl halides in the presence of NaH, exhibited significant antimuscarinic activity in rat ileum. However, (±)-I (R = CH₂CHMeNMe₂) was at least 5 times more potent than the corresponding O-(α-methylcholine) ether derivative of benzophenone oxime whereas (±)-I (R = CHMeCH₂NMe₂) was the least active among I.

Journal of Pharmaceutical Sciences published new progress about 4584-49-0. 4584-49-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Salt,Amine,Aliphatic hydrocarbon chain, name is 2-Chloro-N,N-dimethylpropan-1-amine hydrochloride, and the molecular formula is C5H13Cl2N, Recommanded Product: 2-Chloro-N,N-dimethylpropan-1-amine hydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yuen, Tsz Ying published the artcileSynthesis of chiral alkenyl cyclopropane amino acids for incorporation into stapled peptides, Quality Control of 5034-06-0, the publication is Journal of Organic Chemistry (2020), 85(3), 1556-1566, database is CAplus and MEDLINE.

α,α’-Disubstituted amino acids serve as important non-proteinogenic amino acids in the construction of stabilized helical peptides. To expand the repertoire of α,α’-disubstituted amino acids, chiral alkenyl-containing cyclopropane amino acids were synthesized via a two-step olefination and cyclopropanation procedure. Herein, we report the first example of the use of alkenyl cyclopropane building blocks to constrain MDM2-targeting helical peptides. The increased potency and efficacy associated with C-terminal cyclopropane substitution is postulated to be driven by a combined effect of net hydrophobicity and enhanced protein association rates.

Journal of Organic Chemistry published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C5H5NO3S, Quality Control of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Charles, Mark D. published the artcileDiscovery, Development, and SAR of Aminothiazoles as LIMK Inhibitors with Cellular Anti-Invasive Properties, SDS of cas: 145349-62-8, the publication is Journal of Medicinal Chemistry (2015), 58(20), 8309-8313, database is CAplus and MEDLINE.

As part of a program to develop a small mol. inhibitor of LIMK, a series of aminothiazole inhibitors were discovered by high throughput screening. Scaffold hopping and subsequent SAR directed development led to a series of low nanomolar inhibitors of LIMK1 and LIMK2 that also inhibited the direct biomarker p-cofilin in cells and inhibited the invasion of MDA MB-231-luc cells in a matrigel inverse invasion assay.

Journal of Medicinal Chemistry published new progress about 145349-62-8. 145349-62-8 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids, name is 2-Chloro-4-methylphenylboronic acid, and the molecular formula is C7H8BClO2, SDS of cas: 145349-62-8.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Deltour, G. published the artcileDetermination of carnitine in biologic media, HPLC of Formula: 6249-56-5, the publication is Clinica Chimica Acta (1960), 181-5, database is CAplus and MEDLINE.

Carnitine, after extraction by appropriate solvents or liberation from biol. materials by acid hydrolysis, is separated electrophoretically. Separation is carried out on Whatman 3 MM paper at 400 v. by means of buffer prepared by adding pyridine to 0.3M AcOH to give a final pH of 4.1. Position of the carnitine spot is located with I vapor; the spot is cut out and eluted with HCl-EtOH, and carnitine is estimated by the method of Friedman (CA 52, 12978a) in which the ethyl ester is complexed in alk. medium with bromophenol blue. The procedure gives an error of the order of 10%. Application of the method to several betaines and the results are described.

Clinica Chimica Acta published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, HPLC of Formula: 6249-56-5.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ranjitkar, Pratistha published the artcileAffinity reagents that target a specific inactive form of protein kinases, SDS of cas: 6313-54-8, the publication is Chemistry & Biology (Cambridge, MA, United States) (2010), 17(2), 195-206, database is CAplus and MEDLINE.

A number of small-mol. inhibitors have been developed that target the catalytic domains of protein kinases that are not in an active conformation. An inactive form that has been observed in several kinases is the DFG-out conformation. This conformation is characterized by an almost 180° rotation of the conserved Asp-Phe-Gly (DFG) motif in the ATP-binding cleft relative to the active form. However, the sequence and structural determinants that allow a kinase to stably adopt the DFG-out conformation are not known. Here, we characterize a series of inhibitors based on a general pharmacophore for this inactive form. We demonstrate that modified versions of these inhibitors can be used to study the thermodn. and kinetics of ligand binding to DFG-out-adopting kinases and for enriching these kinases from complex protein mixtures

Chemistry & Biology (Cambridge, MA, United States) published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, SDS of cas: 6313-54-8.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Presa, Andreu published the artcilePhotoswitching the Cytotoxic Properties of Platinum(II) Compounds, Formula: C15H14Cl2S2, the publication is Angewandte Chemie, International Edition (2015), 54(15), 4561-4565, database is CAplus and MEDLINE.

The photoactivation of potential anticancer metal complexes is a hot topic of current research as it may lead to the development of more selective drugs. Photoactivated chemotherapy (PACT) with coordination compounds is usually based on a (photo)chem. reaction taking place at the metal center. Herein, a new strategy is exploited that consists of “photomodifying” a ligand coordinated to metal ions. Platinum(II) complexes from photoswitchable 1,2-dithienylethene-containing ligands have been prepared, which exhibit two interconvertible photoisomeric forms that present distinct DNA-interacting properties and cytotoxic behaviors.

Angewandte Chemie, International Edition published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Formula: C15H14Cl2S2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Camargo Solorzano, Patricia published the artcilePhotoinduced Synthesis of Dibenzofurans: Intramolecular and Intermolecular Comparative Methodologies, Quality Control of 145349-62-8, the publication is Journal of Organic Chemistry (2018), 83(15), 7867-7877, database is CAplus and MEDLINE.

The S_RN1 reaction has been used as a powerful tool for the synthesis of heterocycles, and only a few studies about photoinduced intramol. cyclization to generate a new C-O bond by a radical pathway have been reported. This work introduces two strategies for the synthesis of substituted dibenzofurans by electron transfer (eT) reactions. The first one is a three-step process that comprises bromination of o-arylphenols, Suzuki-Miyaura cross-coupling and photoinduced cyclization in order to obtain the above-mentioned products. The second one is a metal-free procedure and does not require any photocatalyst. Different solvents were tested, and the yields ranged from low to moderate. A comparison was established between both methodologies, showing that the second one is the most suitable for the synthesis of dibenzofurans.

Journal of Organic Chemistry published new progress about 145349-62-8. 145349-62-8 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids, name is 2-Chloro-4-methylphenylboronic acid, and the molecular formula is C7H8BClO2, Quality Control of 145349-62-8.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Senczyszyn, Jemma published the artcileSpirocyclic Dihydropyridines by Electrophile-Induced Dearomatizing Cyclization of N-Alkenyl Pyridinecarboxamides, Formula: C6H4ClNO2, the publication is Organic Letters (2013), 15(8), 1922-1925, database is CAplus and MEDLINE.

On treatment with acylating or sulfonylating agents, N-alkenyl pyridinecarboxamides (N-pyridinecarbonyl enamines) undergo a dearomatizing cyclization initiated by pyridine acylation and followed by intramol. trapping of the resulting pyridinium cation (e.g., I → II). The products are spirocyclic dihydropyridines which may be further elaborated to spirocyclic heterocycles with drug-like features.

Organic Letters published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C17H37NO3, Formula: C6H4ClNO2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics